A green strategy for porous biochar fabrication with superior capacity for peroxydisulfate activation to degrade sulfadiazine: the cooperative role of C-sp 3 and specific surface a... oleh Shulian Wang, Yan Huang, Shuanglong Ma, Sihui Zhan, Jingzhen Wang, Boqiang Gao, Xiaodan Tang, Qiuhui Zhu, Shengjun Xu, Xuliang Zhuang